Toyota Sienna Service Manual: Terminals of ECU
1. CHECK DISTANCE CONTROL ECU
- Reference: waveform 1
HINT:
- Terminal: LRDD - SGND
- Gauge set: 2 V/DIV., 10 ms./DIV.
- Condition: ignition switch in the ON position
- Reference: waveform 2
HINT:
- Terminal: LRRD - SGND
- Gauge set: 2 V/DIV., 5 ms./DIV.
- Condition: ignition switch in the ON position
2. CHECK ECM
If the value is not within the specified range, the ECM may have a malfunction.
3. CHECK LASER SENSOR
- Reference: waveform 1
HINT:
- Terminal: LRDD - SGND
- Gauge set: 2 V/DIV., 10 ms./DIV.
- Condition: ignition switch in the ON position
- Reference: waveform 2
HINT:
- Terminal: LRRD - SGND
- Gauge set: 2 V/DIV., 5 ms./DIV.
- Condition: ignition switch in the ON position
4. BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU)
Problem symptoms table
HINT:
Use the table below to help determine the cause of the
problem symptom. The likely causes of the problem are
indicated in descending order. Check each suspected area
in order. Re ...
Diagnosis system
1. DIAGNOSIS FUNCTION
The diagnosis function makes the light and the
multi-information display come on, and the CRUISE
main indicator light blink as shown in the illustration.
When ...
Other materials:
How to proceed with
troubleshooting
HINT:
Use this procedure to troubleshoot the engine immobiliser
system.
The intelligent tester should be used in steps 4, 5 and 7.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
3 CRANK ENGINE FOR MORE THAN 10 SECONDS
4 CHECK FOR DTC
C ...
Removal
1. DISCHARGE FUEL SYSTEM PRESSURE
HINT:
See page FU-1.
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
3. REMOVE NO. 1 ENGINE UNDER COVER
4. DRAIN ENGINE COOLANT (See page CO-6)
5. REMOVE FRONT WIPER ARM HEAD CAP (See page
WW-4)
6. REMOVE FRONT WIPER ARM RH (See page WW-4)
7. REMOVE FRO ...
Cruise Control Switch Circuit
DESCRIPTION
The cruise control main switch operates 8 functions: SET, - (COAST),
TAP-DOWN, RES (RESUME), +
(ACCEL), TAP-UP, CANCEL, and MODE. The SET, TAP-DOWN, and - (COAST) functions,
and the RES
(RESUME), TAP-UP, and + (ACCEL) functions are operated with the same switch. The
cruise contr ...
